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php-src/ext/iconv/iconv.c
Moriyoshi Koizumi 8e1f89bc6f Use proper types
2002-11-08 18:40:54 +00:00

497 lines
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/*
+----------------------------------------------------------------------+
| PHP Version 4 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2002 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.02 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.php.net/license/2_02.txt. |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Rui Hirokawa <rui_hirokawa@ybb.ne.jp> |
| Stig Bakken <ssb@fast.no> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "php_globals.h"
#include "ext/standard/info.h"
#include "main/php_output.h"
#include "SAPI.h"
#include "php_ini.h"
#include <errno.h>
#include "php_iconv.h"
#ifdef HAVE_ICONV
#ifdef HAVE_GICONV_H
#include <giconv.h>
#else
#include <iconv.h>
#endif
#ifdef HAVE_GLIBC_ICONV
#include <gnu/libc-version.h>
#endif
#ifdef HAVE_LIBICONV
#define LIBICONV_PLUG
#define icv_open(a, b) libiconv_open(a, b)
#define icv_close(a) libiconv_close(a)
#define icv(a, b, c, d, e) libiconv(a, b, c, d, e)
#else
#define icv_open(a, b) iconv_open(a, b)
#define icv_close(a) iconv_close(a)
#define icv(a, b, c, d, e) iconv(a, (char **) b, c, d, e)
#endif
/* {{{ iconv_functions[]
*/
function_entry iconv_functions[] = {
PHP_NAMED_FE(iconv,php_if_iconv, NULL)
PHP_FE(ob_iconv_handler, NULL)
PHP_FE(iconv_get_encoding, NULL)
PHP_FE(iconv_set_encoding, NULL)
{NULL, NULL, NULL}
};
/* }}} */
/* {{{ iconv_module_entry
*/
zend_module_entry iconv_module_entry = {
STANDARD_MODULE_HEADER,
"iconv",
iconv_functions,
PHP_MINIT(miconv),
PHP_MSHUTDOWN(miconv),
NULL,
NULL,
PHP_MINFO(miconv),
NO_VERSION_YET,
STANDARD_MODULE_PROPERTIES
};
/* }}} */
ZEND_DECLARE_MODULE_GLOBALS(iconv)
#ifdef COMPILE_DL_ICONV
ZEND_GET_MODULE(iconv)
#endif
/* {{{ typedef enum php_iconv_err_t */
typedef enum _php_iconv_err_t {
PHP_ICONV_ERR_SUCCESS = SUCCESS,
PHP_ICONV_ERR_CONVERTER = 1,
PHP_ICONV_ERR_WRONG_CHARSET = 2,
PHP_ICONV_ERR_TOO_BIG = 3,
PHP_ICONV_ERR_ILLEGAL_SEQ = 4,
PHP_ICONV_ERR_ILLEGAL_CHAR = 5,
PHP_ICONV_ERR_UNKNOWN = 6
} php_iconv_err_t;
/* }}} */
/* {{{ prototypes */
static php_iconv_err_t php_iconv_string(const char * in_p, size_t in_len, char **out, size_t *out_len, const char *in_charset, const char *out_charset);
static void _php_iconv_show_error(php_iconv_err_t err, const char *in_charset, const char *out_charset TSRMLS_DC);
/* }}} */
/* {{{ PHP_INI
*/
PHP_INI_BEGIN()
STD_PHP_INI_ENTRY("iconv.input_encoding", ICONV_INPUT_ENCODING, PHP_INI_ALL, OnUpdateString, input_encoding, zend_iconv_globals, iconv_globals)
STD_PHP_INI_ENTRY("iconv.output_encoding", ICONV_OUTPUT_ENCODING, PHP_INI_ALL, OnUpdateString, output_encoding, zend_iconv_globals, iconv_globals)
STD_PHP_INI_ENTRY("iconv.internal_encoding", ICONV_INTERNAL_ENCODING, PHP_INI_ALL, OnUpdateString, internal_encoding, zend_iconv_globals, iconv_globals)
PHP_INI_END()
/* }}} */
/* {{{ php_iconv_init_globals */
static void php_iconv_init_globals(zend_iconv_globals *iconv_globals)
{
iconv_globals->input_encoding = NULL;
iconv_globals->output_encoding = NULL;
iconv_globals->internal_encoding = NULL;
}
/* }}} */
/* {{{ PHP_MINIT_FUNCTION */
PHP_MINIT_FUNCTION(miconv)
{
char *version = "unknown";
ZEND_INIT_MODULE_GLOBALS(iconv, php_iconv_init_globals, NULL);
REGISTER_INI_ENTRIES();
#if HAVE_LIBICONV
{
static char buf[16];
snprintf(buf, sizeof(buf), "%d.%d",
((_libiconv_version >> 8) & 0x0f), (_libiconv_version & 0x0f));
version = buf;
}
#elif HAVE_GLIBC_ICONV
version = (char *)gnu_get_libc_version();
#endif
#ifdef PHP_ICONV_IMPL
REGISTER_STRING_CONSTANT("ICONV_IMPL", PHP_ICONV_IMPL, CONST_CS | CONST_PERSISTENT);
#else
REGISTER_STRING_CONSTANT("ICONV_IMPL", "unknown", CONST_CS | CONST_PERSISTENT);
#endif
REGISTER_STRING_CONSTANT("ICONV_VERSION", version, CONST_CS | CONST_PERSISTENT);
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION */
PHP_MSHUTDOWN_FUNCTION(miconv)
{
UNREGISTER_INI_ENTRIES();
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION */
PHP_MINFO_FUNCTION(miconv)
{
zval iconv_impl, iconv_ver;
zend_get_constant("ICONV_IMPL", sizeof("ICONV_IMPL")-1, &iconv_impl TSRMLS_CC);
zend_get_constant("ICONV_VERSION", sizeof("ICONV_VERSION")-1, &iconv_ver TSRMLS_CC);
php_info_print_table_start();
php_info_print_table_row(2, "iconv support", "enabled");
php_info_print_table_row(2, "iconv implementation", Z_STRVAL(iconv_impl));
php_info_print_table_row(2, "iconv library version", Z_STRVAL(iconv_ver));
php_info_print_table_end();
DISPLAY_INI_ENTRIES();
zval_dtor(&iconv_impl);
zval_dtor(&iconv_ver);
}
/* }}} */
/* {{{ php_iconv_string
*/
php_iconv_err_t php_iconv_string(const char *in_p, size_t in_len,
char **out, size_t *out_len,
const char *in_charset, const char *out_charset)
{
#if !ICONV_SUPPORTS_ERRNO
unsigned int in_size, out_size, out_left;
char *out_buffer, *out_p;
iconv_t cd;
size_t result;
typedef unsigned int ucs4_t;
*out = NULL;
*out_len = 0;
/*
This is not the right way to get output size...
This is not space efficient for large text.
This is also problem for encoding like UTF-7/UTF-8/ISO-2022 which
a single char can be more than 4 bytes.
I added 15 extra bytes for safety. <yohgaki@php.net>
*/
out_size = in_len * sizeof(ucs4_t) + 15;
out_left = out_size;
in_size = in_len;
cd = icv_open(out_charset, in_charset);
if (cd == (iconv_t)(-1)) {
return PHP_ICONV_ERR_UNKNOWN;
}
out_buffer = (char *) emalloc(out_size + 1);
out_p = out_buffer;
result = icv(cd, (const char **) &in_p, &in_size, (char **)
&out_p, &out_left);
if (result == (size_t)(-1)) {
efree(out_buffer);
return PHP_ICONV_ERR_UNKNOWN;
}
*out_len = out_size - out_left;
out_buffer[*out_len] = '\0';
*out = out_buffer;
icv_close(cd);
return PHP_ICONV_ERR_SUCCESS;
#else
/*
iconv supports errno. Handle it better way.
*/
iconv_t cd;
size_t in_left, out_size, out_left;
char *out_p, *out_buf, *tmp_buf;
size_t bsz, result = 0;
php_iconv_err_t retval = PHP_ICONV_ERR_SUCCESS;
*out = NULL;
*out_len = 0;
cd = icv_open(out_charset, in_charset);
if (cd == (iconv_t)(-1)) {
if (errno == EINVAL) {
return PHP_ICONV_ERR_WRONG_CHARSET;
} else {
return PHP_ICONV_ERR_CONVERTER;
}
}
in_left= in_len;
out_left = in_len + 32; /* Avoid realloc() most cases */
out_size = 0;
bsz = out_left;
out_buf = (char *) emalloc(bsz+1);
out_p = out_buf;
while (in_left > 0) {
result = icv(cd, (const char **) &in_p, &in_left, (char **) &out_p, &out_left);
out_size = bsz - out_left;
if (result == (size_t)(-1)) {
if (errno == E2BIG && in_left > 0) {
/* converted string is longer than out buffer */
bsz += in_len;
tmp_buf = (char*) erealloc(out_buf, bsz+1);
if (tmp_buf != NULL) {
out_p = out_buf = tmp_buf;
out_p += out_size;
out_left = bsz - out_size;
continue;
}
}
}
break;
}
icv_close(cd);
if (result == (size_t)(-1)) {
switch (errno) {
case EINVAL:
retval = PHP_ICONV_ERR_ILLEGAL_CHAR;
break;
case EILSEQ:
retval = PHP_ICONV_ERR_ILLEGAL_SEQ;
break;
case E2BIG:
/* should not happen */
retval = PHP_ICONV_ERR_TOO_BIG;
break;
default:
/* other error */
retval = PHP_ICONV_ERR_UNKNOWN;
efree(out_buf);
return PHP_ICONV_ERR_UNKNOWN;
}
}
*out_p = '\0';
*out = out_buf;
*out_len = out_size;
return retval;
#endif
}
/* }}} */
/* {{{ php_iconv_show_error() */
static void _php_iconv_show_error(php_iconv_err_t err, const char *in_charset, const char *out_charset TSRMLS_DC)
{
switch (err) {
case PHP_ICONV_ERR_SUCCESS:
break;
case PHP_ICONV_ERR_CONVERTER:
php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Cannot open converter");
break;
case PHP_ICONV_ERR_WRONG_CHARSET:
php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Wrong charset, cannot convert from `%s' to `%s'",
in_charset, out_charset);
break;
case PHP_ICONV_ERR_ILLEGAL_CHAR:
php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Detected incomplete character in input string");
break;
case PHP_ICONV_ERR_ILLEGAL_SEQ:
php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Detected illegal character in input string");
break;
case PHP_ICONV_ERR_TOO_BIG:
/* should not happen */
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Run out buffer");
break;
default:
/* other error */
php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Unknown error (%d)", errno);
break;
}
}
/* }}} */
/* {{{ proto string iconv(string in_charset, string out_charset, string str)
Returns str converted to the out_charset character set */
PHP_NAMED_FUNCTION(php_if_iconv)
{
char *in_charset, *out_charset, *in_buffer, *out_buffer;
size_t out_len;
int in_charset_len, out_charset_len, in_buffer_len;
php_iconv_err_t err;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "sss",
&in_charset, &in_charset_len, &out_charset, &out_charset_len, &in_buffer, &in_buffer_len) == FAILURE)
return;
err = php_iconv_string(in_buffer, (size_t)in_buffer_len,
&out_buffer, &out_len, in_charset, out_charset);
_php_iconv_show_error(err, in_charset, out_charset TSRMLS_CC);
if (out_buffer != NULL) {
RETVAL_STRINGL(out_buffer, out_len, 0);
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto string ob_iconv_handler(string contents, int status)
Returns str in output buffer converted to the iconv.output_encoding character set */
PHP_FUNCTION(ob_iconv_handler)
{
char *out_buffer, *content_type, *mimetype = NULL, *s;
zval *zv_string;
unsigned int out_len;
int status, mimetype_alloced = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "zl", &zv_string, &status) == FAILURE)
return;
convert_to_string_ex(&zv_string);
if (SG(sapi_headers).mimetype &&
strncasecmp(SG(sapi_headers).mimetype, "text/", 5) == 0) {
if ((s = strchr(SG(sapi_headers).mimetype,';')) == NULL){
mimetype = SG(sapi_headers).mimetype;
} else {
mimetype = estrndup(SG(sapi_headers).mimetype, s-SG(sapi_headers).mimetype);
mimetype_alloced = 1;
}
} else if (SG(sapi_headers).send_default_content_type) {
mimetype =(SG(default_mimetype) ? SG(default_mimetype) : SAPI_DEFAULT_MIMETYPE);
}
if (mimetype != NULL) {
php_iconv_err_t err = php_iconv_string(Z_STRVAL_P(zv_string),
Z_STRLEN_P(zv_string), &out_buffer, &out_len,
ICONVG(internal_encoding), ICONVG(output_encoding));
_php_iconv_show_error(err, ICONVG(internal_encoding), ICONVG(output_encoding) TSRMLS_CC);
if (out_buffer != NULL) {
spprintf(&content_type, 0, "Content-Type:%s; charset=%s", mimetype, ICONVG(output_encoding));
if (content_type && sapi_add_header(content_type, strlen(content_type), 0) != FAILURE) {
SG(sapi_headers).send_default_content_type = 0;
}
RETURN_STRINGL(out_buffer, out_len, 0);
}
if (mimetype_alloced) {
efree(mimetype);
}
}
zval_dtor(return_value);
*return_value = *zv_string;
zval_copy_ctor(return_value);
}
/* }}} */
/* {{{ proto bool iconv_set_encoding(string type, string charset)
Sets internal encoding and output encoding for ob_iconv_handler() */
PHP_FUNCTION(iconv_set_encoding)
{
char *type, *charset;
int type_len, charset_len, retval;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss", &type, &type_len, &charset, &charset_len) == FAILURE)
return;
if(!strcasecmp("input_encoding", type)) {
retval = zend_alter_ini_entry("iconv.input_encoding", sizeof("iconv.input_encoding"), charset, charset_len, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
} else if(!strcasecmp("output_encoding", type)) {
retval = zend_alter_ini_entry("iconv.output_encoding", sizeof("iconv.output_encoding"), charset, charset_len, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
} else if(!strcasecmp("internal_encoding", type)) {
retval = zend_alter_ini_entry("iconv.internal_encoding", sizeof("iconv.internal_encoding"), charset, charset_len, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
} else {
RETURN_FALSE;
}
if (retval == SUCCESS) {
RETURN_TRUE;
} else {
RETURN_FALSE;
}
}
/* }}} */
/* {{{ proto array iconv_get_encoding([string type])
Get internal encoding and output encoding for ob_iconv_handler() */
PHP_FUNCTION(iconv_get_encoding)
{
char *type = "all";
int type_len;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "|s", &type, &type_len) == FAILURE)
return;
if (!strcasecmp("all", type)) {
if (array_init(return_value) == FAILURE) {
RETURN_FALSE;
}
add_assoc_string(return_value, "input_encoding", ICONVG(input_encoding), 1);
add_assoc_string(return_value, "output_encoding", ICONVG(output_encoding), 1);
add_assoc_string(return_value, "internal_encoding", ICONVG(internal_encoding), 1);
} else if (!strcasecmp("input_encoding", type)) {
RETVAL_STRING(ICONVG(input_encoding), 1);
} else if (!strcasecmp("output_encoding", type)) {
RETVAL_STRING(ICONVG(output_encoding), 1);
} else if (!strcasecmp("internal_encoding", type)) {
RETVAL_STRING(ICONVG(internal_encoding), 1);
} else {
RETURN_FALSE;
}
}
/* }}} */
#endif
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
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